Williams Sound | WIR SYS 90 PRO | Sound Plus™ Language Interpretation System, Model WIR SYS 4

Sound Plus™ Language Interpretation System, Model WIR SYS 4
Sound Plus™ Language Interpretation System, Model WIR SYS 4
ADA COURTROOM ASSISTIVE LISTENING SYSTEM
Description:
The Language Interpretation System, model WIR SYS 4, is the ideal package for courtrooms that may be
required to translate up to four languages simultaneously. Participants wear the RX12-4N body-pack style receiver to listen to the language of their choice. They can sit anywhere in a 11,000 ft2 area and can adjust the volume
to meet their comfort level. For the hard of hearing participant, the RX12-4N receiver can be used with a neckloop (included) to amplify the participant’s telecoil equipped hearing aid. SoundPlus® infrared technology
ensures privacy and security: the message of the proceeding will not travel outside the walls of the courtroom.
Each WIR SYS 4 package includes: two (2) TX9 emitters, two (2) MOD 232 modulators, four (4) RX12-4N receivers, four
(4) HED 021 headphones, one (1) NKL 001 neckloop, and one (1) RPK 005 rack panel kit. The WIR SYS 4 meets and
exceeds government ADA regulations for public hearing assistance, and is backed by a five-year warranty.*
MOD 232 Modulator:
Size, Weight:
Color:
Rack Mount:
Power Supply:
Modulation:
Carrier Frequency:
Signal-to-Noise Ratio:
Frequency Response:
Total Harmonic Distortion:
Audio Processing:
Auto Carrier Shut-Off:
Fig. 1: MOD 232 Front Panel
8.5" W x 8.2" D x 1.7" H (21.5 cm x 20.8 cm x 4.4 cm), 3.1 lbs (1.5kg)
Black epoxy paint with white legends
1/2 rack space wide, 1 rack space high, one or two modulators may be mounted
in a single IEC rack space with RPK 005 (single) or RPK 006 (double) Rack Mount Kits
Wall Transformer, 24 VAC, 50-60 Hz, 15 VA
North America:
TFP 016, UL/CSA
Europe:
TFP 027-01, 2-pin Schuko plug, CE
UK:
TFP 027-02, 3-pin UK plug, CE
FM Wideband, +50 kHz deviation, 50 uS pre-emphasis
Channel A: Selectable, 2.3/2.8/3.3/3.8 MHz,
Channel B: Selectable, 2.3/2.8/3.3/3.8 MHz
More than 60 dB
30 to 16,000 Hz, +1 dB, -3dB, electrical response
Less than 2%, electrical response
Compression (slope) adjustable from 1:1 to 4:1
Switchable compression gain: Moderate: 16 dB. Max: 33 dB
30-minute timer shuts off carrier when no audio is present (can be disabled)
Two Channel Infrared System Modulator
Microprocessor Controlled
Frequency Synthesized
Power
4 5 6
3
2
1
0
10
Level
7
8
9
+9
+6
+3
0
-3
-6
-9
-12
-15
-18
3.3
2.8
2.3
Frequency
(MHz)
Channel A
Power Switch:
Power Indicator:
Audio Level Controls:
Audio Indicators:
Carrier LEDs:
Compress Control:
Input Mix LED:
Stereo LED:
Phones Switch:
Phones Output:
Infrared Test LED:
Williams Sound
3.8
Compress
4 5 6
3
2
1
0
10
Level
7
8
9
+9
+6
+3
0
-3
-6
-9
-12
-15
-18
Inputs Mixed
3.8
3.3
2.8
2.3
Frequency
(MHz)
Compress
Phones
Stereo
IR
CH A
CH B
Channel B
Two-position push button, ON/OFF
Green LED
CHA and CHB Input Level, rotary knobs
CHA and CHB Audio Level, 10-segment LED’s
4 green LED carrier “on” indicators per channel (indicates frequency, malfunctions)
1:1 to 4:1
Indicates inputs A and B audio are mixed and transmitted by CHA. CHB off
Indicates stereo mode
Selects CH1 or CH2 for phones when not in stereo mode
1/4" TRS headphone jack. Accepts stereo, mono and any impedance phones
IR LED for receiver testing, monitoring and audio signal testing
*90 days on accessories
**TX9 operation in single-channel mode
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
©2005, Williams Sound Corp. MCAT 030B
1
Sound Plus™ Language Interpretation System, Model WIR SYS 4
Fig. 2: MOD 232 Rear Panel
Input CH A
CH A
12345678
Power In
24 VAC, 15 VA, 50-60 Hz
Baseband Input Jack:
Baseband Output Jack:
Approvals:
Operating Requirements:
Warranty:
Plug
CH B
100 Ohms
Made in USA
Line Level:
Audio Line Output Jacks:
Configuration Switches:
Output
12345678
Configuration
Switches
Power Input:
Audio Input Jack:
Mic Level:
Williams Sound
Baseband
Output
Input
CH A
CH B
MOD 232 Infrared System Modulator
Audio Line
Output
Input CH B
50 Ohms
24V
3-Pin Molex, 24 VAC, 50-60 Hz, 15 VA
CHA and CHB combination XLR/TRS jack
Balanced, Lo-Z, 100 µV min. to 90 mV max., 1mV nominal, 3 kΩ input impedance, supplies switchable simplex power
per DIN 45596 for condenser mics
Balanced or unbalanced, 21 mV min. to 10V max., 212 mV nominal, 100 kΩ
RCA Jack, CHA and CHB, 500 mV, unbalanced, 100 Ω source impedance, load impedance must be greater than 1 kΩ
CHA and CHB 8-position DIP switch, selects Mic/Line input, compressor gain, simplex power, discrete or mixed
inputs, carrier frequency, channel disable, auto shut-off timer
BNC, allows mixing with additional MOD 232 Modulator (4CH operation), 100 mV, 50 Ω input impedance, use with MOD
232 or MOD 112 (111), BNC, RG-58 Cable
Two BNC jacks carry baseband signal, 100 mV/channel, 50Ω source impedance, for use with WIR TX9 or MOD 232 only
CE, FCC
0-50º C ambient temperature, non-condensing, non-corrosive atmosphere
5 years on modulator, 90 days on accessories
WIR TX9 Emitter:
Dimensions, Weight:
Color:
Power Supply:
Power Cable:
Indicators:
Carrier Frequency:
Emitter IR Power:
Coverage Area:
Baseband Input:
Baseband Output:
Baseband Cable:
Operating Requirements:
Mounting Kits:
Warranty:
Approvals:
Compatible Receivers:
11.25" W x 6.25" H x 2.125" D (28.6 cm x 15.9 cm x 5.4 cm), 1.9 lbs (0.9 kg)
Black with white legends, red acrylic lens
Wall Transformer, 24 VAC, 50-60 Hz, 35 VA, 3-pin MOLEX Connector
North America:
TFP 010, UL/CSA
Europe:
TFP 027-01, 2-pin Schuko plug, CE
UK:
TFP 027-02, 3-pin UK plug, CE
Note: Each WIR TX9 requires its own power supply
NEC Class 2 wiring, two-conductor, 18 ga., 200’ (61m) max. length
Green LED power indicator, red LED baseband indicator
50 kHz to 8 MHz
3.5 watts
28,000 ft2 (2,600 m2) in single-channel mode when using the RX12-4 Receiver
11,000 ft2 (1,000 m2) in four-channel mode when using the RX12-4 Receiver
3,500 ft2 (325 m2) in single-channel mode when using the RX14-2 Receiver
3,063 ft2 (285 m2) in single-channel mode when using the RX16 Receiver
(See coverage area diagrams)
BNC, 100 mV per carrier, 50Ω, for use with WIR TX9 or MOD 232 only
BNC, 50 Ω, for use with TX9 only
RG 58 Coax, BNC connectors, maximum 1000’ (300m) length
0-50º C ambient temperature, non-condensing, non-corrosive atmosphere
Wall or Ceiling Mount: BKT 024 Omnidirectional mount, Mic Stand Kit: SS-11 or SS-6
5 years on emitter, 90 days on accessories
CE, FCC, RoHS, WEEE
WIR RX12-4 Four-Channel Receiver, RX14 Stereo Receiver, RX16 Two-Channel Receiver
Fig. 3: WIR TX9 Rear Panel
Multi-Channel Infrared Transmitter
RoHS
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
Class 1
LED Product
www.williamssound.com
WARNING: TO REDUCE THE RISK OF FIRE OR
ELECTRIC SHOCK DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOISTURE.
Mounting
Bracket
Note: It is normal for this unit to feel warm while it is in operation.
Power Supply Wiring:
Use NEC, Class 2 Wiring, 18 ga. minimum,
200 ft. (70m) maximum length (18 ga.)
Baseband Signal Wiring:
Baseband Signal Wiring:
Use 50 Ohm Coaxial Cable (RG58)
Use RG58 Coax,1000 ft. (350m) max. length
Williams Sound Corp., Minneapolis, Minnesota, USA
Patent Pending
Made in U.S.A.
Baseband
(Modulation)
NC
Power In:
24VAC
50-60Hz
35VA
~
24 VAC
Out
Plug
Out
In
50 Ohms
Power On
Baseband On
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
©2005, Williams Sound Corp. MCAT 030B
2
Sound Plus™ Language Interpretation System, Model WIR SYS 4
Coverage Patterns:
Fig. 4: Receiver Coverage Area with TX9 Emitter in Single Channel Mode
Feet 90
80
70
60
50
40
30
20
10
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
Feet
0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160
Receiver Coverage Area with TX9
Transmitter in Single Channel Mode
RX12-4 Receiver
RX14 or RX14-2 Receiver
RX16 Receiver
The coverage area for the TX9 will vary depending on the receiver being used. The diagram above
demonstrates the receiver coverage when operating a single TX9 emitter in single channel mode.
Patterns are direct radiation patterns.
Note: Reflections of the infrared light from walls, ceilings and floors may change these patterns.
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
©2005, Williams Sound Corp. MCAT 030B
3
Sound Plus™ Language Interpretation System, Model WIR SYS 4
Fig. 5: 3-Dimension Foot Pattern
The TX9 floods the listening audience with a
cone shape light pattern as shown here.
The path of the cone shape light leaves a
pattern on the ground, or "foot print, " and
indicates where the strongest receiver
reception will occur.
The actual coverage area will vary depending
on the sensitivity of the receiver being used.
Refer to Figures 4 and 7 to determine how
many emitters are required for 100% coverage
of the listening area.
To determine the best location for the emitter, it helps to think of the IR emitter as an invisible floodlight. You’ll want to aim it so the listeners are “flooded” with the infrared light. The emitter should
also be positioned high enough so it won’t be blocked by people and other physical obstructions.
See Figure 6 below. Mount the emitter at least 2 ft. (.61 m) above the audience. Position the
emitter to face in a slightly downward angle, 20°, that will increase the “throw” of the infrared
beam.
Fig. 6: Vertical Beam Spread
Minimum Receiver Range When Operating with a TX9 Emitter in Single Channel Mode
RX12-4 Receiver: 150' (45 m)
RX14-2: 80' (24 m)
RX16: 70' (21 m)
(Range)
TX9
Center Of
am
Emitter Be
30'
SCREEN
6'
STAGE
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
©2005, Williams Sound Corp. MCAT 030B
4
Sound Plus™ Language Interpretation System, Model WIR SYS 4
Maximum Range When Using the RX12-4 Infrared Receiver
Fig. 7: Horizontal and Vertical Radiation Polar Plots
HORIZONTAL RADIATION POLAR PATTERNS
DISTANCE FROM EMITTER TO 1 nW/sq cm CONTOUR
180
48
160
42
140
36
120
30
– 70
– 60
– 50
– 40
– 30
100
24
80
18
60
12
40
6
20
60
200
54
180
48
160
42
140
36
120
30
FEET
54
– 90
– 80
METERS
200
FEET
METERS
– 90
60
VERTICAL RADIATION POLAR PATTERNS
DISTANCE FROM EMITTER TO 1 nW/sq cm CONTOUR
– 80
– 70
– 60
– 50
– 40
– 30
100
24
80
18
60
12
40
6
20
– 20
– 20
– 10
– 10
0
0
10
10
20
20
30
30
40
40
50
50
60
60
70
90
80
70
90
80
1 Channel, 1 nW/sq cm
(Approx. 28000 sq ft, 2600 sq m)
1 Channel, 1 nW/sq cm
2 Channel, 1 nW/sq cm per channel
(Approx. 18000 sq ft, 1700 sq m)
2 Channels, 1 nW/sq cm per channel
4 Channel, 1 nW/sq cm per channel
(Approx. 11000 sq ft, 1000 sq m)
4 Channels, 1 nW/sq cm per channel
Reflections of the infrared light from walls, ceilings, and floors may change these patterns.
Important: Remember to point the emitter towards the listening audience!
If you’re not getting sufficient coverage with a single, properly installed TX9 Emitter, you may need
to add additional WIR TX9 Emitters to achieve full coverage of your listening area. Figures 8a and
8b illustrate how multiple emitters can be used for large room installations.
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
©2005, Williams Sound Corp. MCAT 030B
5
Sound Plus™ Language Interpretation System, Model WIR SYS 4
Multiple Emitters Installed to Maximize Coverage
Fig. 8a: Overlapping Illumination Patterns to Cover Larger Listening Areas
TX9
TX9
TX9
TX9
Fig. 8a above is a typical example of how multiple emitters are used to cover larger listening areas.
Generally it is desirable for the illumination patterns to overlap. Note: The coverage area will vary
depending on the infrared receiver being used; refer to Figures 4 and 7 to determine how many
emitters are required to achieve full coverage of a listening area.
Fig. 8b: Overlapping Illumination Patterns to Cover Larger Listening Areas
Coverage Area
with Single Emitter
TX9
TX9
Coverage Area
with Second Emitter
Added to Same
Emission Point
(50% increase)
When two emitters are used at the same emission point in single channel mode, the overall coverage area increses 50%. When using an RX12-4 receiver, as a result, the coverage area will increase
to an estimated 42,000 ft2 (3,902 m2); the RX14-2 will increase to 5,250 ft2 (488 m2); the RX16 will
increase to 4,590 ft2 (426 m2 ).
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
©2005, Williams Sound Corp. MCAT 030B
6
Sound Plus™ Language Interpretation System, Model WIR SYS 4
WIR RX12-4 Receiver:
Receiver Style:
Size:
Weight:
Color and Material:
Lanyard:
Operating Temperature:
Battery Type:
Battery Life:
Battery Drain:
Charging Contacts:
Carrier Frequency:
Operating Range:
De-Emphasis:
FM Deviation:
Signal-to-Noise Ratio:
Squelch:
Frequency Response:
Total Harmonic Distortion:
Controls:
Indicators:
Audio Output Jacks:
Audio Output Power:
Acoustic Output:
Sensitivity:
Approvals:
Warranty:
Compatible Headphones/Earphones:
Body-pack, dual-lens detector, lanyard
3-5/8" L x 2-3/8" W x 7/8" H (9.2 cm x 6 cm x 2.2 cm)
4.5 oz (127 g) with batteries
Gray, shatter-proof polyallomer
3 ft (.91 m), allows receiver to be warn around the neck
-10° C to +50° C
2 x AA, alkaline (BAT 001) or NiMH (BAT 026)
Alkaline: 60 hours, NiMH: 30 hours/charge
25 mA, nominal
For use only with CHG 200 and CHG 1600 Chargers
Channel 1: 2.3MHz, Channel 2: 2.8 MHz
Channel 3: 3.3MHz, Channel 4: 3.8MHz
28,000 ft2 (2,600 m2) when using a single TX9 Emitter in single channel
mode. (See coverage drawing)
50 uS
±50 kHz
>60 dB min.
Receiver squelches (mutes) at 40 dB S/N ratio
25 Hz to 16 KHz, +1 dB, -3 dB, electrical response
Less than 1%, electrical response
ON/OFF/VOLUME: Combination thumbwheel knob
Channel Selector: Four position rotary switch
Red LED “ON” indicator, flashes to indicate Low battery
3.5 mm stereo mini phone jack. Accepts 3.5 mm mono or
stereo phone plug.
15 mW max at 32 Ω
110 dB SSPL90 w/ EAR 013
Better than 1 nW/cm2 for 40 dB signal to noise ratio
CE, FCC
5 years on receiver, 90 days on accessories
Mono or stereo, 8-32 ohms, 3.5 mm mini phone plug,
HED 021, EAR 013, EAR 014, EAR 022
EAR
Volume
OFF
On
1
2 3
4
Channel
Fig. 9a: RX12-4 Top View
Williams Sound
IR
4 channel
Fig. 9b: RX12-4 Front View
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
©2005, Williams Sound Corp. MCAT 030B
7
Sound Plus™ Language Interpretation System, Model WIR SYS 4
Four-Channel System Diagram:
Fig. 10: Four-Channel System
WIR TX9 Emitter (Rear)
WIR TX9 Emitter (Rear)
Multi-Channel Infrared Transmitter
Multi-Channel Infrared Transmitter
Williams
Sound ®
Helping People Hear
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
Williams
Sound ®
Helping People Hear
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
Williams Sound Corp., Minneapolis, Minnesota, USA
WARNING: TO REDUCE THE RISK OF FIRE OR
ELECTRIC SHOCK DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOISTURE.
Williams Sound Corp., Minneapolis, Minnesota, USA
WARNING: TO REDUCE THE RISK OF FIRE OR
ELECTRIC SHOCK DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOISTURE.
Mounting
Bracket
Note: It is normal for this unit to feel warm while it is in operation.
Power Supply Wiring:
Mounting
Bracket
Note: It is normal for this unit to feel warm while it is in operation.
Power Supply Wiring:
Use NEC, Class 2 Wiring, 18 ga. minimum,
200 ft. (70m) maximum length (18 ga.)
Use NEC, Class 2 Wiring, 18 ga. minimum,
200 ft. (70m) maximum length (18 ga.)
Baseband Signal Wiring:
Baseband Signal Wiring:
Baseband Signal Wiring:
Baseband Signal Wiring:
Use 50 Ohm Coaxial Cable (RG58)
Use RG58 Coax,1000 ft. (350m) max. length
Use 50 Ohm Coaxial Cable (RG58)
Use RG58 Coax,1000 ft. (350m) max. length
Class 1
LED Product
Class 1
LED Product
Made in U.S.A.
Made in U.S.A.
Baseband
(Modulation)
NC
24 VAC
Power In:
24VAC
50-60Hz
35VA
~
Out
Out
Baseband
(Modulation)
NC
In
Plug
Power On
~
Out
CH A
12345678
MOD 232 Modulator (Rear)
MOD 232 Infrared System Modulator
Audio Line
Output
Input CH A
Williams Sound
Input
Baseband
Output
CH A
50 Ohms
Williams Sound
Input
Baseband
Output
Output
Power In
24 VAC, 15 VA, 50-60 Hz
Plug
CH B
100 Ohms
Made in USA
24V
MOD 232 Infrared System Modulator
Audio Line
Output
12345678
Configuration
Switches
Plug
CH B
100 Ohms
12345678
CH A
CH B
24 VAC, 15 VA, 50-60 Hz
Configuration
Switches
Input CH B
Output
Power In
12345678
Made in USA
Baseband On
Baseband Signal
CH A
CH B
In
50 Ohms
Power On
MOD 232 Modulator (Rear)
Input CH B
Out
Plug
Baseband On
To Additional
Emitters (if necessary)
Input CH A
24 VAC
Power In:
24VAC
50-60Hz
35VA
50 Ohms
50 Ohms
24V
Baseband Signal
CHA
Audio In
CHB
Audio In
WCA 068
CHA
Audio In
CHB
Audio In
Sound
Williams
SOUND SYSTEM
Sound
Williams
IR
IR
l
4 channe
l
4 channe
SOUND SYSTEM
RX12-4 Receiver
(wireless)
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
©2005, Williams Sound Corp. MCAT 030B
8
Sound Plus™ Language Interpretation System, Model WIR SYS 4
Bid Specs:
Modulator, Model MOD 232
The infrared system shall consist of separate modulator and emitter units, with portable receivers. The modulator unit
shall be a half-rack style, metal enclosure. A rack panel shall be available to mount one or two modulator units within
a single EIA rack space. An adjustable floor stand and mounting bracket shall be available to mount the modulator and
emitter together for portable operation.
The modulator shall provide two channels of selectable FM carrier signals; 2.3/2.8/3.3/3.8 MHz, so that a single
modulator can be used to simultaneously transmit up to two channels, and two modulators can be ganged together
to transmit up to four channels simultaneously. The carrier signals shall use 50 kHz deviation and 50 µS pre-emphasis.
The carrier signals (baseband) shall be transmitted to one or more emitters by 50 ohm RG58 coaxial cable with
BNC-type connectors. A BNC-type baseband input jack and baseband output jack shall be provided on the modulator.
The modulator shall be powered by an external 24 VAC, 10 VA, 50-60 Hz power supply, connected via a 3-pin Molex
power connector.
It shall have a rocker-type power switch, power LED indicator, four carrier indicator LEDs and two bar graph-type LED
audio indicators. The modulator shall have a modulated IR LED on the front panel for testing purposes, and a headphone jack that accommodates mono and stereo 1/4" headphones and channel monitoring switch. The modulator shall
have two rotary audio input level controls, and a screwdriver adjustable control for varying the input compression from
1:1 to 4:1. The modulator shall have two timers that automatically shut off the carriers when there is no audio signal
present for 30 minutes. The modulator shall have two combination input jacks that accept 3-pin XLR plugs for balanced
microphone input or 1/4" TRS plugs for balanced or unbalanced line-level inputs. The XLR inputs shall be low impedance, accept signal levels from 100 µV to 90 mV, and supply 15 V simplex power per DIN45596. The TRS jacks shall
accept balanced or unbalanced audio signal levels from 21 mV to 10 V. The modulator shall have CE, FCC, Industry
Canada and AS approval and carry a five-year parts and labor warranty.
The modulator shall be the Williams Sound Corp. model MOD 232.
Emitter, Model WIR TX9
The emitter shall be contained in a metal enclosure with a shatter-resistant lens. The emitter shall include an omnidirectional mounting bracket for permanent installation and a bracket shall be available for mounting on a floor stand
for portable installations. Each emitter shall be powered by a 24 VAC, 50 VA, 50-60 Hz power supply. The power
connector shall be a 3-pin Molex-type. The emitter shall have a BNC-type 50 ohm baseband input and a BNC-type baseband 50 ohm output jack. The emitter shall have a repeater circuit to allow multiple numbers of emitters to operate
from the baseband signal. The emitter shall have a visible LED indicator for power and for baseband signal. Carrier
frequency is 50KHz to 8 MHz. The emitter shall shut off when the baseband signal is not present. The emitter shall provide an effective coverage area of 28,000 sq ft (2,600 sq m) in single channel mode and 18,000 sq ft (1,700 sq m) in two
channel mode when using the RX12-4 or RX16 receiver. The emitter shall be convection-cooled, without fans. The emitter shall have CE, FCC, RoHS, and WEEE approval and carry a five-year warranty on parts and labor.
The emitter shall be Williams Sound Corp. model WIR TX9.
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
©2005, Williams Sound Corp. MCAT 030B
9
Sound Plus™ Language Interpretation System, Model WIR SYS 4
Four-Channel Receiver, model WIR RX12-4
The receiver shall be a body-pack type with an IR detector lens on the face of the unit. The unit shall have a lanyard
forhands-free operation. The receiver shall have a rotary-type volume control. The receiver shall operate for 60 hours
with two AA alkaline batteries and for 30 hours per charge with NiMH AA batteries. The receiver shall be charged
without battery removal via charger contacts in the case. A drop-in charger accessory shall recharge the batteries in
14 hours. The receiver shall be housed in an impact resistant plastic case with a hinged battery door that does not
separate from the receiver. The receiver shall receive 2.3 MHz, 2.8 MHz, 3.3 MHz or 3.8 MHz modulated IR signals with
50 µS de-emphasis. The receiver shall have a 3.5 mm stereo phone jack and accommodate low-impedance mono or
stereo earphones and headphones. The receiver shall accommodate neckloop telecoil couplers. The receivers shall
provide 110 dB SSPL90 with EAR 013 earbud-type earphones.
The system electrical frequency response shall be 25 Hz to 16 kHz, +1, -3 dB and the signal-to-noise ratio shall be 60
dB. The receiver shall have CE, FCC, Industry Canada and AS approval. The receiver shall be covered by a five-year
parts and labor warranty, excluding earphones, headphones, batteries and chargers.
The receiver shall be the Williams Sound Corp. model WIR RX12-4.
Contact:
United States
Williams Sound Corp.
10321 W. 70th Street
Eden Prairie, MN 55344
Ph: 800-328-6190 / 952-943-2252 / FAX: 952-943-2174
Web: www.williamssound.com
Email: info@williamssound.com
Canada
Thorvin Electronics
2861 Sherwood Heights Dr. Units 36-37
Oakville, ON L6J-7K1 Canada
Ph: 800-323-6634 / 905-829-3040 / FAX: 905-829-4196
Web: www.thorvinelectronics.com
South America
DPTech
SIA Trecho 3/4 Lote 335 2°. Andar
71200-030 Brasília, DF
BRAZIL
Ph: (5561) 361-1384
Fax: (5561) 361-0948
Web: www.dptech.com.br
Email: ws@dptech.com.br
United Kingdom
Sound Associates
Keeble House, 81 Island Farm Road
West Molesey, Surrey KT 2SA
United Kingdom
Ph: (44) 020 8939 5900
Fax: (44) 020 8939 5901
Web: www.soundassociates.co.uk
Email: jmurdoch@soundassociates.com
Asia, Europe, Latin America, Mexico
International Sales Department
Williams Sound Corp.
10321 W. 70th Street
Eden Prairie, MN 55344 USA
Phone: +1 952 224 7791
Fax: +1 952 943 2174
Email: info@williamssound.com
Web: www.williamssound.com
©2005, Williams Sound Corp. MCAT 030B
10
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